Which countries, and to which type of policies do you refer? Economic, law, taxes, social programs, etc.? There are MANY options and all usually depend on the prevailing political philosophy of the people and/or leaders - and that countries individual needs and situation.Law and order usually comes first, so hopefully all citizens are treated fairly and the same - and there is recourse for wrongdoing. Then should come some sort of economic development to create jobs, wealth, and a tax base for which to run the basic services of the government.From there it is wide open depending on what your definition of a "sustainable society" is... Hopefully though, it is based on freedom and individual rights, and not having one person or group hold too much power over others (democracy, etc.). Is this a test question you are trying to answer or something like that? The question is way to broad to answer in specifics, but good luck and keep asking questions. The answers are almost never absolute or universal, since the particular countries factors and specific goals are not defined. And people never agree on the solutions. Welcome to politics!

People go to the streets and protest that governments are not spending or doing enough but no one goes to the streets when then spend too much and do too much. Our forefathers around the world new of this kind of thinking. Do and spend only what you need. but that is going to be very painful for many places.

Study a successful commune. Everyone works and everyone shares in the wealth. Those whose work is physically harder or needs more education to be successful are compensated more than others. Plant crops, raise meat animals. Rules are for everyone, no exceptions. Personally, I would add a place of worship.

More order, less law. You should keep in your mind a map of the legal universe, and it should be extremely simple. At one end, you have everything that is compulsory - paying taxes, driving on the left (in the UK). At the other end, you have everything that is forbidden - murder, theft, perjury, blackmail, rape. You strive always to keep the space between these (which is the optional) as wide as possible.